Can dead people try to communicate with you through dreams?

Yes, even so began the religion and the belief of the existence of the soul, when someone saw in dream the creator Spirit and dead relatives who spoke to them about the future and when all that began to be fulfilled that they said, everything began

and of the 20,000 dreams that I have interpreted, I have seen that when someone dies murdered or because they commit suicide, they always appear in dreams asking for help so that you pray for them. even, once a woman appeared to her dead husband in her dream and told her exactly where her will was.
But beyond what I can tell you, you can check it yourself

No. I do believe that people who have died pass on and enter the next world....If they do communicate with us it would be in apparitions or miracles as have some of the saints, but I have never heard of a real account of a dead person communicating through dreams....If they could do that, they really wouldn't be dead, would they?

I believe so

You use the word "dead" and that is such a harsh word, for death is a door to a different realm and yes, there is communication between realms. There are many open to this communication whether it be through dreams or other psychic phenomena.

I have with my grandparents.

No

No, only demons.

Scientifically, dreams do not have any magical powers and cannot predict the future, or communicate with anyone.

However that does not matter to people who have profound experiences with their dreams. Dreams can be responsible for changing your life, and there are many cases of that in the Bible.

Even though science tells us that dead people cannot communicate with your through dreams, that doesn't prevent anyone from believing it.

According to the Bible no but we can look for symbolisms of their spirits on the physical plane.

No, of course not.

No